Kidney disease can cause pain and discomfort in the lower back and also affect the lumbar spine. Kidney diseases commonly include urinary tract infections, urinary stones, and also renal insufficiency due to various reasons. Urinary tract infections and urinary stones can cause reflex pain and discomfort in the lower back, and in severe cases, patients can experience severe pain. Renal insufficiency will affect the calcium and phosphorus metabolism in the body, calcium and phosphorus metabolism is the prerequisite for bone metabolism and muscle function, renal insufficiency affects calcium and phosphorus metabolism, which will lead to muscle function disorders, resulting in abnormal bone metabolism, resulting in osteoporosis and decreased muscle function, which is clinically called renal bone disease, and will obviously affect the stability of the lumbar spine, resulting in hyperplasia, bone loss, deformation, etc. of the lumbar spine, Deformation and so on, so the kidney disease will affect the changes of the lumbar spine.